Although Germany were, by far, the better team, had the goal stood, it would have been 2-2 and perhaps England would not have had to press so as to leave the big gaps that were exploited for the 3rd and 4th German goals.
As far as that Tevez goal, that was way offside but this kind of error is more common and, perhaps, a little more forgivable given the nature of offside. This too could have made a difference in the match.
I understand the reasons for not introducing technology to help with these decisions, but things must change. Think about the tools available and used by the analysts. They can freeze frame, change location, everything is mapped. When we can go back and look at every little detail later, it means that there is more accountability on the referees. TO be fair to them, they are doing a very difficult job and they are human but they do need a little help.
The goal line technology needs to be implemented and it is my prediction that it will be in place before the next European Championships in 2 years. There was similar controversy about the magic beam that they now use in tennis to monitor the line on the service box.